Dark Blue Beryl from Pakistan

Abstract—Turnera macrosperma, a new species from the Brazilian Cerrado, is described and illustrated. The new species belongs to the series Turnera and can be characterized by the white petals with dark blue/violet basal spot and large seeds with papillose aril. SEM images, distribution map, and comments on taxonomy and morphology are presented.

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Sunlight exposure: the effects on the performance of paragliding fabric

Industria Textila ◽

10.35530/it.069.05.1406 ◽

2018 ◽

Vol 69 (05) ◽

pp. 381-389

Author(s):

MENGÜÇ GAMZE SÜPÜREN ◽

TEMEL EMRAH ◽

BOZDOĞAN FARUK

Keyword(s):

Mechanical Properties ◽

Aging Process ◽

Air Permeability ◽

Sunlight Exposure ◽

Test Results ◽

Coating Materials ◽

Strength Tests ◽

Before And After ◽

The Relationship ◽

Dark Blue

This study was designed to explore the relationship between sunlight exposure and the mechanical properties of paragliding fabrics which have different colors, densities, yarn counts, and coating materials. This study exposed 5 different colors of paragliding fabrics (red, turquoise, dark blue, orange, and white) to intense sunlight for 150 hours during the summer from 9:00 a.m. to 3:00 p.m. for 5 days a week for 5 weeks. Before and after the UV radiation aging process, the air permeability, tensile strength, tear strength, and bursting strength tests were performed. Test results were also evaluated using statistical methods. According to the results, the fading of the turquoise fabric was found to be the highest among the studied fabrics. It was determined that there is a significant decrease in the mechanical properties of the fabrics after sunlight exposure. After aging, the fabrics become considerably weaker in the case of mechanical properties due to the degradation in both the dyestuff and macromolecular structure of the fiber

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Sustainable roll-to-roll manufactured multi-layer smart label

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-021-07640-z ◽

2021 ◽

Author(s):

Liisa Hakola ◽

Elina Jansson ◽

Romain Futsch ◽

Tuomas Happonen ◽

Victor Thenot ◽

...

Keyword(s):

Electronic Waste ◽

Near Field ◽

Colour Change ◽

Pilot Scale ◽

Printed Antennas ◽

Free Paper ◽

Roll To Roll ◽

Final Yield ◽

Smart Label ◽

Dark Blue

AbstractSustainability in electronics has a growing importance due to, e.g. increasing electronic waste, and global and European sustainability goals. Printing technologies and use of paper as a substrate enable manufacturing of sustainable electronic devices for emerging applications, such as the multi-layer anti-counterfeit label presented in this paper. This device consisted of electrochromic display (ECD) element, NFC (near field communication) tag and circuitry, all fully roll-to-roll (R2R) printed and assembled on plastic-free paper substrate, thus leading to a sustainable and recyclable device. Our setup uses harvested energy from HF field of a smartphone or reader, to switch an electrochromic display after rectification to prove authenticity of a product. Our novelty is in upscaling the manufacturing process to be fully printable and R2R processable in high-throughput conditions simulating industrial environment, i.e. in pilot scale. The printing workflow consisted of 11 R2R printed layers, all done in sufficient quality and registration. The printed antennas showed sheet resistance values of 32.9±1.9 mΩ/sq. The final yield was almost 1500 fully printed devices, and in R2R assembly over 1400 labels were integrated with 96.5% yield. All the assembled tags were readable with mobile phone NFC reader. The optical contrast (ΔE*) measured for the ECDs was over 15 for all the printed displays, a progressive switching time with a colour change visible in less than 5 s. The smart tag is ITO-free, plastic-free, fully printed in R2R and has a good stability over 50 cycles and reversible colour change from light to dark blue.

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Clinical and Forensic Aspects of the Different Subtypes of Argyria

Journal of Clinical Medicine ◽

10.3390/jcm10102086 ◽

2021 ◽

Vol 10 (10) ◽

pp. 2086

Author(s):

Luís Mota ◽

Ricardo Jorge Dinis-Oliveira

Keyword(s):

Systemic Absorption ◽

Histopathological Analysis ◽

Wide Range ◽

Silver Deposits ◽

Specific Tissue ◽

Eye Lesions ◽

Dark Blue ◽

Typical Skin ◽

Viable Treatment

Argyria encompasses the different cosmetic alterations that can develop if enough silver particles deposit in a specific tissue, typically in the skin, ranging from localized dark-blue macules to a generalized slate-gray/bluish tinge following systemic absorption. This work aims to fully review the state of the art regarding pathophysiology, diagnosis, treatment, and relevant clinical and forensic features of argyria. Argyria has been diagnosed in a wide range of ages, both sexes and varied ethnicities, with no known individual predisposing factors. Ultraviolet radiation with subsequence increases of melanin production aggravates the discoloration due to a reduction in the silver deposits. Physical examination and silver exposure in the anamnesis can be highly suggestive of the diagnosis, but a histopathological analysis with Energy-Dispersive X-ray Spectroscopy is required to unequivocally determine the discoloration etiology. Safe and effective treatment has only been accomplished with laser techniques, though only a few cases have been reported and with limited follow-up time. In conclusion, argyria typically has an occupational or iatrogenic etiology. It should be suspected when a patient presents with typical skin or eye lesions. A seemingly viable treatment modality, with laser technology, is finally within the horizon.

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Color Tuning by Oxide Addition in PEDOT:PSS-Based Electrochromic Devices

Polymers ◽

10.3390/polym11010179 ◽

2019 ◽

Vol 11 (1) ◽

pp. 179 ◽

Cited By ~ 9

Author(s):

Delphin Levasseur ◽

Issam Mjejri ◽

Thomas Rolland ◽

Aline Rougier

Keyword(s):

Thin Films ◽

Iron Oxide ◽

Conducting Polymers ◽

Applied Voltage ◽

Oxide Content ◽

Electrochromic Devices ◽

Careful Evaluation ◽

Pedot Film ◽

Oxide Addition ◽

Dark Blue

Poly(3,4-ethylenedi-oxythiophene) (PEDOT) derivatives conducting polymers are known for their great electrochromic (EC) properties offering a reversible blue switch under an applied voltage. Characterizations of symmetrical EC devices, built on combinations of PEDOT thin films, deposited with a bar coater from commercial inks, and separated by a lithium-based ionic membrane, show highest performance for 800 nm thickness. Tuning of the color is further achieved by mixing the PEDOT film with oxides. Taking, in particular, the example of optically inactive iron oxide Fe2O3, a dark blue to reddish switch, of which intensity depends on the oxide content, is reported. Careful evaluation of the chromaticity parameters L*, a*, and b*, with oxidizing/reducing potentials, evidences a possible monitoring of the bluish tint.

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Direct Fluorescent Detection of Organothiophosphorus Pesticides and Some of Their Sulfur-containing Breakdown Products After Thin Layer Chromatography

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/50.5.1088 ◽

1967 ◽

Vol 50 (5) ◽

pp. 1088-1098

Author(s):

Mohamed Tawfik H Ragab

Keyword(s):

Thin Layer ◽

Ethyl Acetate ◽

Thin Layer Chromatography ◽

Ultraviolet Light ◽

Congo Red ◽

Fluorescent Detection ◽

Bromine Vapor ◽

Layer Chromatography ◽

Sulfur Containing ◽

Dark Blue

Abstract A rapid, simple, convenient, and widely applicable method for the direct fluorescent detection of organothiophosphorus pesticides and some postulated breakdown products of these compounds is presented. The coinpounds were spotted on thin layer chromatographic sheets, developed in ethyl acetate :nhexane, and made visible by exposure to bromine vapor followed by spraying with ferric chloride and 2-(o-hydroxy phenyl) benzoxazole. Of the 47 compounds tested, 32 compounds produced fluorescent blue spots vinder longwave ultraviolet light; these consisted of 25 organothiophosphorus pesticides, 5 sulfur-containing breakdown products, and phosphoric and hypophosphorous acids. A superimposed Congo red spray destroyed the fluorescence and resulted in dark blue spots against a red backgrovind. The sensitivity of this method is in the range of 0.2 to 5.0 μg, depending on the specific compound.

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A new melanistic variant of the caterpillar hunter Calosoma wilcoxi LeConte, 1848 from Texas, United States of America and a preliminary phylogeny of the genus Calosoma Weber, 1801 (Coleoptera: Carabidae)

The Canadian Entomologist ◽

10.4039/tce.2016.28 ◽

2016 ◽

Vol 149 (1) ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

Jesse W. Ray ◽

Matthias Seidel ◽

Martin Husemann

Keyword(s):

United States ◽

United States Of America ◽

Phylogenetic Analyses ◽

Ground Beetle ◽

Abundant Species ◽

Cytochrome Oxidase Subunit ◽

New Variant ◽

Central Texas ◽

Coi Sequences ◽

Dark Blue

AbstractTwo aberrant ground beetle (Coleoptera: Carabidae) specimens from the genus Calosoma Weber, 1801 were collected in Waco, Texas, United States of America, in 2012–2013. The specimens, which are morphologically most similar to Calosoma wilcoxi LeConte, 1848, but are dark blue-black instead of the typical metallic green. We employed DNA barcoding and phylogenetic methods to confirm the identities of the aberrant specimens. Preliminary phylogenetic analyses of cytochrome oxidase subunit 1 (COI) sequences of central Texas and southwestern species place the aberrant specimens with 100% confidence as C. wilcoxi. The new variant of C. wilcoxi presumably occurs at low densities. Frequent collecting from 2011 to 2014 resulted in the discovery of only two of the aberrant coloured individuals among hundreds of typical green specimens. These specimens (to our knowledge) represent the first published record of melanistic Calosoma from North America. While the majority of North American species in the genus are naturally black, two of the most widely distributed and abundant species, C. scrutator (Fabricius, 1775) and C. wilcoxi, are typically green. We sequenced the aberrant form as well as all species co-occurring with the new colour morph at the collection locality and used records from GenBank and the Barcode of Life Data System to generate a preliminary phylogeny of the genus, which suggested that some of the currently established subgenera are likely not monophyletic.

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Windmill Hill, Avebury, and Grime's Graves Cores and Choppers

Proceedings of the Prehistoric Society of East Anglia ◽

10.1017/s095884180002411x ◽

1919 ◽

Vol 3 (1) ◽

pp. 104-108

Author(s):

H. G. O. Kendall

Keyword(s):

The Other ◽

Light Blue ◽

Number Of Species ◽

The One ◽

Dark Blue

Cores and chopping tools are very numerous at Windmill Hill, Avebury Down, Grime's Graves, and Cissbury. They are characteristic of the industry. In the main they differ markedly from the cores of the prism industries. True prisms are rare in the one and numerous in the other; the one shows comparatively broad, the other comparatively narrow facets and flakes; the flakes of the latter being on the whole thinner and finer. It is noteworthy that when the flints of both industries have lain near the surface, those of the one in Herts., Wilts., Sussex, Norfolk, and Suffolk are almost invariably white or light blue; whilst those of the other range from light blue, through dark blue, to unchanged black or grey; with a partial exception, easy of explanation, on the coast of Cornwall.The “lumps” may be divided into a number of species. Some were cores only, others were tools for chopping, cutting, scraping, pecking, boring, or clearing out split marrow bones; some were cores first and tools afterwards.

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A case of two spellings for Humboldt’s blue-winged mosquito (Diptera: Culicidae)

Zootaxa ◽

10.11646/zootaxa.4974.1.10 ◽

2021 ◽

Vol 4974 (1) ◽

pp. 191-192

Author(s):

RALPH E. HARBACH ◽

NEAL L. EVENHUIS

Keyword(s):

Mosquito Species ◽

Know How ◽

The Past ◽

The Poor ◽

Magdalena River ◽

Perceived Color ◽

Dark Blue

While adding taxon names to the Systema Dipterorum database (Evenhuis & Pape 2021), one of us (NLE) discovered that Humboldt (1819) had spelled the proposed name of a nominal mosquito species in two ways. He described the species, which was found in swampy places along the Magdalena River near Tenerife, Colombia, as Culex cyanopennis on page 340 and afterwards referred to it as Culex cyanopterus on pages 345 and 349. Both names have the same meaning: cyano- (Gr. kyanos, dark blue), pennis (L. penna, feather, wing) and pteron (Gr. feather, wing). The species was named for the perceived color of the wings: “Alæ cæruleæ, splendore semi-metallico…” (wings blue, a bright semi-metallic). On page 345, Humboldt states, translated from the French: “We have been informed in the Rio de la Magdalena that in Simitì no other Culex than the jejen [je·jén: Sp., gnat, mosquito] was known in the past. You can spend the night there quietly, because the jejen is not a nocturnal insect. Since the year 1801, the big blue-winged mosquito (Culex cyanopterus) has shown itself in such abundance that the poor inhabitants of Simitì do not know how to get a peaceful sleep.” Thus, in addition to having the same meaning, the two names are associated with the same locality.

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